Improvement in cutter-heads for planing or molding machines



.1 n. KIMBALL. Gutter-Heads for Planing or Molding-Machines.No.142,7194, Patented September]6,1873.

A M, PHUTD 'L/THUGHAFlI/G 621 M X (USED/WES P120555) UNI ED STATESPATENT QFFIC'E.

JAMES D. KIMBALL, OF READING, MASSACHUSETTS.

IMPROVEMENT IN CUTTER-HEADS FOR PLANING 0R MOLDING MACHINES.

Specification forming part of Letters Patent No. 12,791, dated September16, 1873; application filed April 17, 1873.

To all whom it may concern:

Be it known that I, JAMES D. KIMBALL, of Reading, in the county ofMiddlesex and State of Massachusetts, have inventedcertain Improvementsin Gutter-Heads for Planing 0r Molding Machines, of which the followingis a specification:

Figure 1 of the accompanying drawings is a top view, and Fig. 2 is aside view, of my improved side head of a molding or other cuttingmachine.

This invention has for its object to effect an improvement in the meansemployed for attaching cutter-heads of molding-machines to theirspindles, whereby each side of the head is adapted to hold a cutter ofordinary construction; and to this end the invention consists inproviding the spindle with a longitudinal groove, and the cutter-headwith a screw entering its top obliquely in such manner as to engage withthe groove and hold the head in place, thereby leaving the sides of thehead unobstructed for the reception of the cutters, as I will nowproceed to describe.

In the drawings, A represents a spindle formed with a groove, B, andreceiving a side head, 0, formed on each side with a vertical T-slot, K,and on the top, at one corner, with an oblique screw-aperture, with thethreads of which mesh the threads of a screw, l), whose bottom end ismade to impinge against or be released from the spindle, according tothe direction in which the screw D is turned. The top of the head isformed, as usual, with a collar or screw-socket, E, formed with a seatfor a screw-nut, F, that operates up and down, so as to hold in anydesired position a vertical screw, G, which is operated up and down inthe socket E, and. bears against the top of the spindle A, so as toraise or lower the side head 0.

Heretofore much objection has been made to the ordinary arrangement ofside heads of molding or cutting machines, on account of the location ofthe set-screw in one side of the head, and the consequent arrangement ofthe tap-bolts of the cutter on either side of it, when desired to use anadditional cutter, which made it impossible in many cases to affix morethan two cutters to the head without altering the formation of thecutter to be adjusted to the set-screw side of the head, and therebynecessitating the employment of considerable time, labor, and expense.

By the above description, reference being had to the drawings, it willbe seen that these objections are obviated in my improvements byslotting each side of the head and locating the set-screw so as to beoperated in the top of the head, thus allowing cutters to be adjusted toall sides of the head without altering their formation, and therebypermitting a great variety of work to be performed with no extra troubleor expense.

Having thus fully described my improvements, what I claim as myinvention, and desire to have secured to me by Letters Patent, is-

The spindle A, having the longitudinal groove B, in combination with thehead 0 and oblique screw D, all arranged and operating substantiallyasdescribed.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

JAMES B. KIMBALL.

Witnesses CARROLL D. WRIGHT, SAML. M. BARTON.

